NOTE: In the charts below, "khz" refers to the frequency in kilohertz, while "meters" is the corresponding wavelength in meters.

So nowadays KFI is assigned to "640 kilohertz", or if you prefer abbreviations, "640 khz"--which should cover all the various ways of saying, for the past 80-plus years, that KFI is located at "640 on your radio dial".

Thus, in the above charts, 560 kilohertz was said by the 300,000 people to be equal to a wavelength of 536 meters, while the more precise 299,820 crowd came up with 535.4 meters.

Well, the tuning range of a variable capacitor is expressed as a ratio where the square root of the variable's maximum capacitance divided by its minimum capacity is equal to the upper frequency of the tuning range divided by its lower frequency.

Moreover, you decide that 1600 kilohertz is the upper frequency you wish to tune.

When using that equation set the value of F to 375 kilohertz and C to the maximum capacitance(365 pf).

Previous work on the sonic-point beat-frequency (SPBF) model of the kilohertz quasi-periodic oscillations (QPOs) observed in the X-ray flux from neutron stars in low-mass binary systems has shown that it naturally explains many properties of these QPOs.

In the SPBF model, the kilohertz QPOs are effects of strong-field gravity.

Thus, if the model is validated, the kilohertz QPOs can be used not only to determine the properties of neutron stars but also to explore quantitatively general relativistic effects in the strong-field regime.

[10.05] Origins of the Kilohertz and Horizontal Branch QPOs in the Z\\Sources(Site not responding. Last check: 2007-10-20)

The frequency relationships observed between the upper and lower kilohertz QPOs and the ~10--60~Hz horizontal branch oscillations (HBOs) in the Z sources are important indicators of the mechanisms that produce them.

Moreover, the correlation observed between the frequencies of the HBO and the upper kilohertz QPO cannot be accounted for in the Lense-Thirring precession model, even when the effects of classical precession are taken into account.

In contrast, the magnetospheric beat-frequency model of the HBOs predicts a power-law relation between HBO frequency and upper kilohertz QPO frequency that is consistent with the relation observed, if the frequency of the upper kilohertz QPO is an orbital frequency in the inner disk.

The digital information must be carried on additional digital sidebands that extend out to approximately +/- 15 kilohertz in the case of the hybrid mode and approximately +/- 10 kilohertz in the all-digital mode.

Much attention was focused on the receiver bandwidth issue more than a decade ago and a compromise was reached to allow reception of bandwidth approaching 10 kilohertz with receivers having sufficient bandwidth, even though there were none commonly available on the market at that time.

A modulator bandwidth of 50 kilohertz or more is needed to provide acceptable IBOC performance and minimize out of band emissions.

On the 8th of March, G3LDOs 73 kilohertz transmissions were received by HB9ASB, significantly increasing the 73 kilohertz one-way distance record to over 700 kilometres.

And we have a report from Johan Bodin, SM6LKM, that Swedish radio amateurs are to be allocated the 136 kilohertz band, with effect from the 1st of April.

Last week we reported that the tests were being organised by American radio amateurs in Northern Virginia on 136.75 kilohertz using the callsign WA2XTF.

www.alg.demon.co.uk /radio/136/gb2rs_990321.htm (1809 words)

[No title](Site not responding. Last check: 2007-10-20)

In this model the X-ray source is a neutron star with a surface magnetic field $\sim 10^7 \dash 10^{10}$~G and a spin frequency of a few hundred Hertz, accreting gas via a Keplerian disk.

This model is consistent with the magnetic fields, accretion rates, and scattering optical depths inferred from previous modeling of the X-ray spectra and rapid X-ray variability of the atoll and Z sources.

It explains naturally the frequencies of the kilohertz QPOs and the fact that the frequencies of these QPOs are similar in sources with different accretion rates and magnetic fields.

These results, which required the co-adding three days of observations of Cen X-3, are at least as fast as the fastest known variations in X-ray emission from an accreting compact object (kilohertz QPO in LMXB sources) and probably faster since extension to{approx}1800 Hz is indicated by the most likely parameterization of the data.

This analysis of GX 17+2 clearly indicates the presence of a kilohertz QPO and the absence of any significant simultaneous kilohertz continuum.

In February 1996, two groups analyzing data at Goddard Space Flight Center began to see evidence for these ultrafast variations in the X-ray light curves of 4U 1728-34 (led by Tod Strohmayer of Goddard) and Sco X-1 (led by Michiel van der Klis of the University of Amsterdam).

The oscillations they observed are nearly periodic and have frequencies of about 1000 hertz - hence the name "kilohertz (kHz) quasi-periodic oscillations (QPO)".

The exception being some South and central American stations which may be heard in between the typical 10 kilohertz spread, typically at 5 kilohertz intervals, 1005 kilohertz, etc. I will further discuss locations outside of North America later in this article.

The AM/Broadcast Band or Medium Wave Band in locations outside of North, South, and Central America is typically from around 500 kilohertz to 1710 kilohertz with intervals of 9 kilohertz.

Even though KXEL is commonly heard in my area under normal conditions, and it's not an exciting or rare DX catch, it is still "DX" as the signal is travelling a long distance (DX) to reach Duluth, MN from Waterloo, Iowa.

A PetSafe electronic dog fence in the 7 Kilohertz range is needed ONLY if your next door neighbor has any kind of electronic dog fence and your wires will be running parallel and will be closer than 15 feet.

In these situations, the receiver picks up the signal from both electronic dog fence systems and the microprocessor becomes confused and the receiver will not respond on that side of the yard.

The 7 Kilohertz PetSafe electronic dog fence is identical to the PetSafe Deluxe System in every way except for the frequency.

The professional audio industry has hitched its wagon ever tighter to the computer industry, and in doing so it has set itself on a path toward higher resolutions and operating values.

But while the Holy Grail plateau of 96 kilohertz (kHz) and 24 bits has been attained, the reality appears that the vast majority of music made today and for the foreseeable future remains in the 44.1 kHz and 48 kHz domains.

Because of their varying characteristics, radio waves of different lengths are employed for different purposes but are usually identified by their frequency (cycles per second).

In honor of the German radio pioneer Heinrich Hertz, his name has been given to the cycle per second (hertz, Hz); 1 kilohertz (kHz) is 1000 cycles per sec, 1 megahertz (MHz) is 1 million cycles per sec, and 1 gigahertz (GHz) is 1 billion cycles per sec.

The higher the frequency, the smaller the wavelength, since all the waves travel at the speed of light (about 186,000 mi / 300,000 km per second).

All manufacturer's make their main pet containment systems in the 10 Kilohertz

A 7 Kilohertz Dog Fence is needed ONLY if your next door neighbor

Kilohertz Dog Fences and the same guidelines apply.

www.my-dog-supplies.com /7-Kilohertz-Dog-Fence.html (490 words)

Learn more about Radio in the online encyclopedia.(Site not responding. Last check: 2007-10-20)

Government, police, fire and commercial voice services use narrowband FM on special frequencies.

Fidelity is sacrificed to use a smaller range of radio frequencies, usually five kilohertz of deviation (5 thousand cycles per second) for maximum pressure, rather than the 16 used by FM broadcasts and TV sound.

Civil and military HF (high frequency) voice services use shortwave radio to contact ships at sea, aircraft and isolated settlements.

Almost every pet containment system is in the 10 Kilohertz frequency range.

A Deluxe 7 Kilohertz System is needed ONLY if your next door neighbor has any kind of underground containment system and your wires will be running parallel and will be closer than 15 feet.

This is the ONLY PetSafe replacement transmitter available, it will work with ALL 7 Kilohertz PetSafe collars (7 Kilohertz is NOT the standard frequency, make sure your existing collars and old transmitter say 7K).

The very popular ladder type filter, using crystals which are almost all on the same frequency, can be assembled and tested using homebrew instruments, and on-the-air results are really excellent.

This is a very useful accessory when you are using an analog dial receiver, as it allows you to check your dial calibration every one hundred kilohertz...

QSL on the air to Saudi Arabia, listener S.M. Bandara also picked up -- and this is unusual -- the 6000 kiloHertz program to North America between 0100 and 0200 UTC with an SIP report of 433, which is remarkably good, considering that the antenna is not beamed in that direction....